Prac musc Flashcards
Abductor pollicis longus
(APL)
O: Posterior surface of proximal halves of ulna, radius, and interosseous membrane
I: Base of 1st metacarpal
N: posterior interosseous ( continuation of deep branch of radial n)
which pulse can be palpated in the anatomical snuff box
radial a.
what is found in the superficial fascia over the anatomical snuff box
superficial branch of the radial nerve and veins tributaries of the cephalic vein
what is the function of synovial sheaths
to reduce friction between the extensor tendons and bones
wrist joint
- synovial condyloid
- distal radius articulates with the scaphoid and lunate carpal bones, while ulna does not contribute to the wrist joint and it has articular disc separating it from the carpal bones
- flexion extension, abduction adduction
what muscles are innervated by the deep branch of radial nerve
- extensor carpi radialis brevis
- extensor carpi ulnaris
- extensor digitorum
- extensor digiti minimi
- supinator
what nerve innervates pronator quadrates
anterior interosseous n from median n
what n innervates anconeus
radial n
anconeus
O: Lateral epicondyle of humerus
I: Lateral surace o olecra- non and superior part o posterior surace o ulna
M: Assists triceps in extending forearm; stabilizes elbow joint; may abduct ulna during pronation
what nerve innervates Flexor pollicis longus (FPL)
Anterior interos- seous nerve, rom median nerve
Posterior interosseous nerve (C7, C8), continu- ation o deep branch of radial nerve
- Abductor pollicis longus (APL)
- Extensor pollicis longus (EPL)
- Extensor pollicis brevis (EPB)
what muscle attaches to the radial tuberosity?
biceps brachii muscle
what attaches to supraglenoid tubercle
long head of biceps brachia
what muscle originates at spine of scapula
deltoid
what muscle inserts on the spine
trapezius
coronoid fossa
accommodates coronoid process of ula during flexion of elbow
what does capitulum articulate w
head of radius
what does the trochlea articulate w
the trochlear notch
ant & medial surface of ulna
origin site for F.D.P
posterior surface of ulna
origin for
- E.I
- E.E.P.L
- A.P.L
instertion for
- anconeus
dorsal tubercle
attachment
- extensor retinaculum
- dorsal radiocarpal ligament
lateral supracondylar ridge
- brachioradialis
- extensor carpi radialis longus
medial supraepicondylar ridge
pronator teres
F.D.s
O: medial epicondyle of humerus, coronoid process of ulna and anterior border of radius.
I middle phalanges of the medial 4 digits.
flexion of the middle phalanges at proximal interphalangeal joints, flexion of proximal phalanges at metacarpophalangeal joints.
FLEXOR POLL LONG
Flexor pollicis longus, originates from the anterior surface of the radius and interosseous membrane, it inserts into base of distal phalanx of thumb (pollex).
Flexes phalanges of thum
FLEXOR DIG PROFUNDUS
originates from the proximal anterior surface of the ulna. Inserts on base of distal phalanges of medial four digits.
Flexes distal phalanges at distal interphalangeal joints, metacarpophalangeal joints and assists in flexion of hand.
